puffstone

例句：

1. 1. The construction workers were exposed to high levels of asbestos in the building.
   建筑工人在大楼里暴露于高水平的石棉。
2. 2. Asbestos is a known carcinogen and can cause serious health problems.
   石棉是一种已知的致癌物质，可能导致严重的健康问题。
3. 3. The company was fined for using asbestos in its products without proper safety measures.
   该公司因在其产品中使用未经适当安全措施的石棉而被罚款。